CN105538854A - 一种生物降解聚乙烯材料 - Google Patents
一种生物降解聚乙烯材料 Download PDFInfo
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Abstract
本发明公开了一种生物降解聚乙烯材料,其特征在于:包括亲水表层和至少一层聚乙烯膜,所述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合;所述亲水表层按重量份计包括以下组份:聚乙烯醇20~35份、淀粉3~5份、高岭土2~5份和2426H低密度聚乙烯10~15份,助氧化剂3~5份;所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45~60份、PE爽滑剂3~5份、5301高密度聚乙烯15~25份、木质素3~5份、高岭土5~10份、助氧化剂5~10份;其效果在于:能大幅度提高一种生物降解聚乙烯材料亲水性以增强其生物降解的能力,还能加快聚乙烯大分子分裂成小分子便于进一步降解。
Description
技术领域
本发明及到高分子塑料技术领域,具体地说是一种生物降解聚乙烯材料。
背景技术
就目前而言,随着低碳生活的需求,传统塑料正逐渐退出历史舞台,应运而生的是可降解的塑料材料。目前主流的两种降解材料分别是光降解材料和生物降解材料,其中光降解塑料的技术在20世纪80年代已经成熟,产量增长很快。
现有技术存在的问题在于:光降解塑料由于自身仅用于日照时间长,光照量充足的地区使用,应有范围狭窄,多限于农田覆盖物等,另一方面,光降解塑料的主要成分为聚烯类树脂,其完全降解性受到怀疑;针对该现象,对于生物降解材料的研究变得更加重要;但是由于聚乙烯的分子量大;疏水性强,因此聚乙烯材料在自然界中的生物降解非常缓慢,因此要提高其生物降解率就必须解决聚乙烯的分子量或者聚乙烯表面的水性能。
发明内容
有针对现有技术的不足,本发明的目的是提供一种生物降解聚乙烯材料,不仅能改善常规塑料表面的疏水性,还能在生物降解过程中将大分子聚乙烯分割成小分子聚乙烯,使其生物降解加快。
为达到上述目的,本发明表述一种生物降解聚乙烯材料,包括亲水表层和至少一层聚乙烯膜,所述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合;
所述亲水表层按重量份计包括以下组份:聚乙烯醇20~35份、淀粉3~5份、高岭土2~5份和2426H低密度聚乙烯10~15份,助氧化剂3~5份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45~60份、PE爽滑剂3~5份、5301高密度聚乙烯15~25份、木质素3~5份、高岭土5~10份、助氧化剂5~10份。
其效果在于;表层以亲水基聚乙烯醇为主,在自然界中可以吸附更多的水分在其表面以增强表面的溶解速度,同时淀粉以及高岭土等生物降解剂以及助氧化剂也进一步提高了降解速度,但是由于表层机械强度较弱,所以在前后表层之间还设置有聚乙烯膜以保障其机械强度,同时为了增强其生物降解率,聚乙烯膜内的生物降解剂比表层含量更高,有利于聚乙烯大分子分割成小分子,利于降解。
进一步的,所述亲水表层和聚乙烯膜的厚度比为1:3。
优选的,所述助氧化剂是纳米氧化铜和纳米三氧化二锰,其质量比为2:1。
进一步的,所述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在3nm至10nm之间。其目的在于,当外层的亲水层分解后,可以有效的保持聚乙烯膜表面的吸水性,以增强其降解效率。
优选的,所述的一种生物降解聚乙烯材料,包括亲水表层和两层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇20份、淀粉3份、高岭土2份和2426H低密度聚乙烯10份,助氧化剂3份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45份、PE爽滑剂3份、5301高密度聚乙烯15份、木质素3份、高岭土5份、助氧化剂5份。
优选的,所述的一种生物降解聚乙烯材料,包括亲水表层和一层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇35份、淀粉5份、高岭土5份和2426H低密度聚乙烯15份,助氧化剂5份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯60份、PE爽滑剂5份、5301高密度聚乙烯25份、木质素35份、高岭土10份、助氧化剂10份。
优选的,所述的一种生物降解聚乙烯材料,包括亲水表层和三层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇30份、淀粉4份、高岭土3份和2426H低密度聚乙烯12份,助氧化剂4份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯50份、PE爽滑剂4份、5301高密度聚乙烯20份、木质素4份、高岭土8份、助氧化剂6份。
本发明的显著效果是:本发明针对目前聚乙烯材料生物降解面临的表面疏水性强以及分子量大的两大难题,分别作出相应的改进,针对表面疏水性强,本发明中将聚乙烯材料的表层制造成具有亲水基团的薄膜,而在内层的聚乙烯膜内增加多种生物降解剂,外层降解后,内层表面的多孔结构有利于水分的吸收,进一步加快聚乙烯大分子分裂成小分子,使其生物降解的效率增加。
具体实施方式
一种生物降解聚乙烯材料,包括亲水表层和至少一层聚乙烯膜,上述亲水表层和聚乙烯膜的厚度比为1:3;上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合,其粘合的步骤如下:
首先将亲水表层和聚乙烯膜分别装在上胶复合机各自的卷料辊上;
然后分别通过各自的自动张力控制以及自动纠偏装置后,向亲水表层和聚乙烯膜表面施加水溶性胶;
最后迅速将亲水表层和聚乙烯膜复合,紧接着进行碾压与烘干;
值得强调的是,上述上胶复合机的卷料辊上密集的分别有纳米级的微针,上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在3nm至10nm之间;
所述亲水表层按重量份计包括以下组份:聚乙烯醇20~35份、淀粉3~5份、高岭土2~5份和2426H低密度聚乙烯10~15份,助氧化剂3~5份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45~60份、PE爽滑剂3~5份、5301高密度聚乙烯15~25份、木质素3~5份、高岭土5~10份、助氧化剂5~10份。
所述助氧化剂是纳米氧化铜和纳米三氧化二锰,其质量比为2:1。
具体实施例1:
一种生物降解塑料膜,包括亲水表层和两层聚乙烯膜;上述亲水表层和聚乙烯膜的厚度比为1:3;上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合,上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在3nm;
亲水表层按重量份计包括以下组份:聚乙烯醇20份、淀粉3份、高岭土2份和2426H低密度聚乙烯10份,助氧化剂3份;
聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45份、PE爽滑剂3份、5301高密度聚乙烯15份、木质素3份、高岭土5份、助氧化剂5份。
按上述标准得到的复合材料其性能如下:
透水性5000g/sm.d;
水溶残渣0;
干剥离强度12N/3”;
湿剥离强度3.2N/3”。
具体实施例2
一种生物降解塑料袋,包括亲水表层和一层聚乙烯膜;上述亲水表层和聚乙烯膜的厚度比为1:3;上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合,上述亲水表层和聚乙烯膜之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在10nm;
亲水表层按重量份计包括以下组份:聚乙烯醇35份、淀粉5份、高岭土5份和2426H低密度聚乙烯15份,助氧化剂5份;
聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯60份、PE爽滑剂5份、5301高密度聚乙烯25份、木质素35份、高岭土10份、助氧化剂10份。
按上述标准得到的复合材料其性能如下:
透水性6700g/sm.d;
水溶残渣0;
干剥离强度10N/3”;
湿剥离强度2.2N/3”。
具体实施例3
一种生物降解保鲜袋,包括亲水表层和三层聚乙烯膜;上述亲水表层和聚乙烯膜的厚度比为1:3;上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合,上述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在6nm;
亲水表层按重量份计包括以下组份:聚乙烯醇30份、淀粉4份、高岭土3份和2426H低密度聚乙烯12份,助氧化剂4份;
聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯50份、PE爽滑剂4份、5301高密度聚乙烯20份、木质素4份、高岭土8份、助氧化剂6份。
按上述标准得到的复合材料其性能如下:
透水性5700g/sm.d;
水溶残渣0;
干剥离强度15N/3”;
湿剥离强度3.7N/3”。
经试验数据表明,本实施例中所制造的生物降解材料,其降解断裂伸长保留率纵向8.3%、降解断裂伸长保留率横向7.6%,大大增强了其生物降解率;同时还具备不易撕裂等优点。
以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (7)
1.一种生物降解聚乙烯材料,其特征在于:包括亲水表层和至少一层聚乙烯膜,所述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间以水溶性粘胶粘合;
所述亲水表层按重量份计包括以下组份:聚乙烯醇20~35份、淀粉3~5份、高岭土2~5份和2426H低密度聚乙烯10~15份,助氧化剂3~5份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45~60份、PE爽滑剂3~5份、5301高密度聚乙烯15~25份、木质素3~5份、高岭土5~10份、助氧化剂5~10份。
2.根据权利要求1所述的一种生物降解聚乙烯材料,其特征在于:所述亲水表层和聚乙烯膜的厚度比为1:3。
3.根据权利要求1所述的一种生物降解聚乙烯材料,其特征在于:所述助氧化剂是纳米氧化铜和纳米三氧化二锰,其质量比为2:1。
4.根据权利要求1所述的一种生物降解聚乙烯材料,其特征在于:所述亲水表层和聚乙烯膜之间以及聚乙烯膜彼此之间粘合后形成蜂窝状的亲水孔,所述亲水孔的孔径在3nm至10nm之间。
5.根据权利要求1至4任一项所述的一种生物降解聚乙烯材料,其特征在于:包括亲水表层和两层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇20份、淀粉3份、高岭土2份和2426H低密度聚乙烯10份,助氧化剂3份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯45份、PE爽滑剂3份、5301高密度聚乙烯15份、木质素3份、高岭土5份、助氧化剂5份。
6.根据权利要求1至4任一项所述的一种生物降解聚乙烯材料,其特征在于:包括亲水表层和一层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇35份、淀粉5份、高岭土5份和2426H低密度聚乙烯15份,助氧化剂5份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯60份、PE爽滑剂5份、5301高密度聚乙烯25份、木质素35份、高岭土10份、助氧化剂10份。
7.根据权利要求1至4任一项所述的一种生物降解聚乙烯材料,其特征在于:包括亲水表层和三层聚乙烯膜;
所述亲水表层按重量份计包括以下组份:聚乙烯醇30份、淀粉4份、高岭土3份和2426H低密度聚乙烯12份,助氧化剂4份;
所述聚乙烯膜按重量份计包括以下组份:7042线性聚乙烯50份、PE爽滑剂4份、5301高密度聚乙烯20份、木质素4份、高岭土8份、助氧化剂6份。
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CN106398259A (zh) * | 2016-10-09 | 2017-02-15 | 范毅 | 一种可降解复合材料、植物营养钵及其制备方法 |
CN109397809A (zh) * | 2018-10-29 | 2019-03-01 | 昆山金盟塑料薄膜有限公司 | 一种易降解复合膜及其制备方法 |
CN110126402A (zh) * | 2019-03-28 | 2019-08-16 | 四川三合坡面科技有限公司 | 一种多层降解的降解膜 |
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CN106398259A (zh) * | 2016-10-09 | 2017-02-15 | 范毅 | 一种可降解复合材料、植物营养钵及其制备方法 |
CN109397809A (zh) * | 2018-10-29 | 2019-03-01 | 昆山金盟塑料薄膜有限公司 | 一种易降解复合膜及其制备方法 |
CN110126402A (zh) * | 2019-03-28 | 2019-08-16 | 四川三合坡面科技有限公司 | 一种多层降解的降解膜 |
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